Adjustable covering device for covering expansion joints of roads and bridges and adjusting method of adjustable covering device

CN122013660APending Publication Date: 2026-05-12CHINA CONSTRUCTION EIGHTH BUREAU (INNER MONGOLIA) CONSTRUCTION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA CONSTRUCTION EIGHTH BUREAU (INNER MONGOLIA) CONSTRUCTION CO LTD
Filing Date
2025-12-31
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing methods of covering expansion joints are ineffective in preventing the intrusion of large particles during long-term use, resulting in excessively large gaps that affect the durability of bridge structures and driving comfort.

Method used

Design an adjustable cover device, including a piston cylinder, a drive unit, a distance sensor, and a controller. By monitoring the distance between the cover plates in real time, the extension of the piston cylinder is automatically adjusted to maintain a set gap. The wave tooth design reduces the probability of debris intrusion, and the oil/gas supply equipment is used to increase the oil/gas pressure to extend the piston cylinder.

Benefits of technology

It achieves adaptive adjustment of the covering device, avoids excessive gaps, ensures the safety and stability of the bridge structure, reduces the probability of large particles intruding, and extends the service life of the cover plate.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of road and bridge engineering, and discloses an adjustable covering device used for covering a road and bridge expansion joint and an adjusting method thereof.The covering device comprises a controller and two covering assemblies, and each covering assembly comprises two cover plates arranged oppositely; a piston cylinder; a driving device; a distance sensor; wherein the controller is used for acquiring a distance value measured by the distance sensor of any one covering assembly in real time, and controlling the driving device of the other covering assembly to drive the corresponding piston barrel to extend after the distance value is higher than a maximum threshold value; and after the distance value is lower than the minimum threshold value, the driving device of the current covering assembly is controlled to drive the corresponding piston barrel to extend, and then the distance between the two cover plates in each covering assembly meets the set gap. The covering device can be actively and adaptively adjusted, the gap between the cover plates can be prevented from being too large, and therefore the safety and stability of a bridge structure are guaranteed.
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